Hi Guys,
I received the material for the pistons the other day, so went about making up the piston blanks during a few hours I had to spare in garage. Firstly, as there were 8 pistons, I wanted to try and minimise doing multiple setups and measuring, and couldn't really justify making a jig. So I went with the approach of machining a stub, that I could pickup in the collet chuck to turn the final diameter.
First pic shows the blanks (1" diam) all machining to exactly the same length to provide the first reference surface.
Next pic shows the machining of a 1/2" stub, using a saddle stop to provide a reference shoulder, and also something to grab the piston with to turn down the final diameter.
I received the material for the pistons the other day, so went about making up the piston blanks during a few hours I had to spare in garage. Firstly, as there were 8 pistons, I wanted to try and minimise doing multiple setups and measuring, and couldn't really justify making a jig. So I went with the approach of machining a stub, that I could pickup in the collet chuck to turn the final diameter.
First pic shows the blanks (1" diam) all machining to exactly the same length to provide the first reference surface.
Next pic shows the machining of a 1/2" stub, using a saddle stop to provide a reference shoulder, and also something to grab the piston with to turn down the final diameter.